Sika® Watertight Concrete Powder

Sika® Watertight  Concrete  Powder  is  a  combined  water-resisting  and  HRWR/Superplasticizing  admixture  used  to  enhance  the  workability  and  reduce  the  water  permeability  of  concrete.  When  added  to  concrete,  the  HRWR  component  in  the  admixture allows for the reduction in the water-cementitious ratio and reduces the large capillary pores in the concrete; the pore blocking component blocks the remaining small capillary pores by forming a hydrophobic layer within the pores. Sika®Watertight Concrete Powder meets requirements of ASTM C494 Type F, ASTM C494 Type S and is ANSI/NSF 61 certified.


  • Reduces water absorption
  • Reduces water penetration